S.S. Tools is a leading manufacturer of precision gear hobs in India. These hobs are used for generating spur and helical gears, involute splines, straight key splines, sprockets, worm wheels, timing pulleys, etc. These are generally supplied with bore keyway, however hobs with end drive slot and shank design are also available. With the help of vast experience, expertise and use of latest multi-axis CNC hob profile grinding machines, customized hob shapes and tooth forms are designed and produced to suit customer specifications. These hobs can be either single or multi-start for finishing, pre-shaving and pre-grinding gears with profile features including tooth tip chamfer, protuberance, topping / semi-topping, full radius, tip/root relief, or any other modifications.
Module (DP) Range: 0.5 – 30 Mod. (DP 50 – 0.85)
Diameter Range: 20 – 300 mm
Accuracy: Certified class AA, A as per DIN 3968.
Materials: Conventional / PM High Speed Steels are available including:
ASP 2060 / ASP 2052 / ASP 2030 / S390 / S290 / M35
Coatings: All types of PVD coatings are available including:
Gold (TiN) / Futura Nano (TiAlN) / Alcrona (AlCrN)
Involute spline hobs are used to produce involute splines and serrations. These hobs are generally produced with pressure angles 30°, 37.5° and 45° as per various DIN and ANSI standards. These hobs can be offered with shoulder clearances in single and multi-thread designs.
Involute Spline Hobs have straight sides teeth like a gear hob, and are usually of stub tooth depth. They are made in single or multiple thread designs, with diametral pitches ranged from 2.5/5 to 128/256 and pressure angles of 30°, 37.5°, or 45°.
Worm gear hobs are provided to manufacture precision worm gears. These hobs can be offered in both shank type, as well as bore type designs. These are specific tools that match the worm shaft with sharpening allowance. Both radial and tangential hobs can be offered in single and multi-start designs.
Sprocket hobs are designed and produced for the formation of chain sprocket tooth forms. Both topping and non-topping hobs can be offered in single and multi-thread designs as per various standards including DIN, BS, ANSI, JIS etc.
These hobs have special curved tooth forms to produce straight key splines on shafts. Spline hobs produce exact tooth forms at given tooth depth. Various profile features including lugs and semi-topping can be incorporated on these hobs
Shanks Hobs are offered for today’s high-speed cutting application. These hobs are mainly used on CNC machines. Shank Hobs can be offered with long cutting rows in single and multi-thread designs.